723
FZUS51 KBOX 101405
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
1005 AM EDT MON AUG 10 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-110300-
1005 AM EDT MON AUG 10 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
WEAK HIGH PRESSURE OVER THE REGION TODAY FOLLOWED BY THE PASSAGE OF
A COLD FRONT OVERNIGHT INTO TUE. HIGH PRES FOLLOWS FOR THE MIDDLE OF
THE WEEK. THIS HIGH MOVES EAST OF THE REGION WED NIGHT WITH THE NEXT
COLD FRONTAL PASSAGE SOMETIME THU INTO THU EVENING BRINGING
SCATTERED SHOWERS AND STORMS. A RIDGE OF HIGH PRES THEN BUILDS IN
FROM THE WEST FRI INTO SAT.
ANZ250-110300-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING SE. SEAS 1 FOOT
OR LESS, THEN AROUND 2 FT. WAVE DETAIL: W 1 FOOT AT 3 SECONDS AND
S 1 FOOT AT 6 SECONDS, BECOMING E 1 FOOT AT 2 SECONDS AND W
1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 3 SECONDS AND
W 1 FOOT AT 2 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 4 SECONDS AND SE 1 FOOT AT 3 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NW 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 6 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 3 SECONDS AND NW 1 FOOT AT 3 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
3 SECONDS AND SE 1 FOOT AT 3 SECONDS. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-110300-
MASSACHUSETTS BAY AND IPSWICH BAY-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING SE. SEAS 1 FOOT
OR LESS, THEN AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 2 SECONDS
AND S 1 FOOT AT 3 SECONDS, BECOMING NW 1 FOOT AT 2 SECONDS AND SE
1 FOOT AT 2 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT IN THE
EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: W 1 FOOT AT 2 SECONDS
AND SE 1 FOOT AT 3 SECONDS, BECOMING E 1 FOOT AT 3 SECONDS AND SW
1 FOOT AT 3 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE DETAIL: S
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 9 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NW 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 4 SECONDS.
WED
W WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL: N
1 FOOT AT 2 SECONDS AND W 1 FOOT AT 3 SECONDS, BECOMING N 1 FOOT
AT 2 SECONDS AND S 1 FOOT AT 3 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 3 SECONDS, BECOMING E 1 FOOT
AT 3 SECONDS AND S 1 FOOT AT 3 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W. SEAS AROUND
2 FT. A CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS AROUND 2 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-110300-
CAPE COD BAY-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
E WINDS AROUND 5 KT, BECOMING S. SEAS 1 FOOT OR
LESS, THEN AROUND 2 FT. WAVE DETAIL: NW 1 FOOT AT 3 SECONDS AND S
1 FOOT AT 7 SECONDS, BECOMING NE 1 FOOT AT 3 SECONDS AND NW
1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
E 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 3 SECONDS.
TUE
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE MORNING, THEN
1 FOOT OR LESS. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND E 1 FOOT
AT 8 SECONDS, BECOMING W 1 FOOT AT 2 SECONDS AND S 1 FOOT AT
5 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: NW 1 FOOT AT 2 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
NW WINDS AROUND 5 KT, BECOMING E IN THE AFTERNOON. SEAS
1 FOOT OR LESS. WAVE DETAIL: N 1 FOOT AT 3 SECONDS AND NW 1 FOOT
AT 3 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS. WAVE
DETAIL: S 1 FOOT AT 2 SECONDS AND N 1 FOOT AT 3 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 5 TO 10 KT, INCREASING TO 10 TO
15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-110300-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
S WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND NW 1 FOOT
AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND NE 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND W 1 FOOT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N
1 FOOT AT 3 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT 3 SECONDS.
THU AND THU NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 4 SECONDS AND NE 1 FOOT
AT 3 SECONDS. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-110300-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND NE 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT
9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT
AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
2 TO 3 FT. WAVE DETAIL: SE 2 FT AT 7 SECONDS AND N 1 FOOT AT
3 SECONDS.
THU AND THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-110300-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND NE 1 FOOT AT 2 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND W 2 FT AT 3 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 7 SECONDS AND W 1 FOOT AT 2 SECONDS.
THU THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-110300-
NANTUCKET SOUND-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND SW 1 FOOT AT 6 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 3 SECONDS AND E 1 FOOT AT 3 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND S 2 FT AT
6 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND SW 1 FOOT AT
6 SECONDS.
WED NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 1 FOOT AT 3 SECONDS AND S 1 FOOT AT 3 SECONDS.
THU AND THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-110300-
VINEYARD SOUND-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND SE 1 FOOT AT 2 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND
N 1 FOOT AT 3 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT 5 SECONDS.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. A CHANCE OF SHOWERS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-110300-
BUZZARDS BAY-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 6 SECONDS AND NE 1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND E 1 FOOT AT 2 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: W 2 FT AT 5 SECONDS AND
N 1 FOOT AT 3 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: N 1 FOOT AT 2 SECONDS AND W 1 FOOT AT
4 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND NE 1 FOOT AT 3 SECONDS.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT. A CHANCE OF SHOWERS.
THU NIGHT THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP
TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-110300-
RHODE ISLAND SOUND-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND NE 1 FOOT AT 2 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 6 SECONDS AND SE 1 FOOT AT 3 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND W 1 FOOT AT
3 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT, BECOMING NW 5 TO 10 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 3 FT AT 5 SECONDS AND N
1 FOOT AT 3 SECONDS.
WED
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND N 1 FOOT AT
2 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 7 SECONDS AND W 1 FOOT AT 3 SECONDS.
THU THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-110300-
BLOCK ISLAND SOUND-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND E 1 FOOT AT 2 SECONDS.
TONIGHT
SW WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 6 SECONDS AND W 1 FOOT AT 3 SECONDS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND W 1 FOOT
AT 3 SECONDS.
TUE NIGHT
NW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND NW 1 FOOT AT
2 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
S 2 FT AT 4 SECONDS AND W 1 FOOT AT 2 SECONDS.
THU THROUGH FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-110300-
BOSTON HARBOR-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
E WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. A CHANCE OF SHOWERS IN THE EVENING.
TUE
W WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS, THEN AROUND
2 FT IN THE AFTERNOON.
TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WED
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
1 FOOT OR LESS.
WED NIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT.
WAVES 1 FOOT OR LESS.
THU AND THU NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A
CHANCE OF SHOWERS AND TSTMS.
FRI AND FRI NIGHT
NW WINDS AROUND 10 KT. GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-110300-
NARRAGANSETT BAY-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
S WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT.
WAVES AROUND 2 FT.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. PATCHY FOG
AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
TUE
W WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. WAVES AROUND 2 FT.
TUE NIGHT
NW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
NE WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT.
WED NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. A CHANCE OF SHOWERS.
THU NIGHT THROUGH FRI NIGHT
NW WINDS 5 TO 10 KT WITH GUSTS UP
TO 20 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-110300-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
LIGHT AND VARIABLE WINDS, BECOMING S 5 TO
10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 6 SECONDS AND W
1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: S 2 FT AT 5 SECONDS AND W 1 FOOT AT 3 SECONDS.
PATCHY FOG AFTER MIDNIGHT. A CHANCE OF SHOWERS AFTER MIDNIGHT
WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND S 2 FT AT
6 SECONDS.
TUE NIGHT
NW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: NW 2 FT AT 3 SECONDS AND S 2 FT AT 6 SECONDS.
WED AND WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 2 FT AT 3 SECONDS AND S 2 FT AT 6 SECONDS.
THU AND THU NIGHT
SW WINDS 5 TO 10 KT, BECOMING W 10 TO 15 KT
WITH GUSTS UP TO 20 KT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT
3 SECONDS AND S 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-110300-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS AROUND 5 KT, INCREASING TO 5 TO 10 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NW 1 FOOT AT
3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
3 FT. WAVE DETAIL: SW 3 FT AT 6 SECONDS AND W 1 FOOT AT
3 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE MORNING.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT
8 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
TUE NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 6 SECONDS AND NW 1 FOOT AT 3 SECONDS.
WED AND WED NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
THU THROUGH FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT AT 6 SECONDS AND NW 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-110300-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: SW 3 FT AT 6 SECONDS AND N 1 FOOT AT 3 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND
NE 1 FOOT AT 2 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT
AT 8 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: W
3 FT AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: SW 2 FT AT 6 SECONDS AND N 1 FOOT AT
4 SECONDS.
WED NIGHT
SW WINDS AROUND 5 KT. SEAS 2 TO 3 FT. WAVE DETAIL:
SW 3 FT AT 6 SECONDS AND E 1 FOOT AT 8 SECONDS.
THU THROUGH FRI
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
FRI NIGHT
NW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-110300-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
1005 AM EDT MON AUG 10 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE
DETAIL: S 2 FT AT 6 SECONDS AND N 1 FOOT AT 2 SECONDS.
TONIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 1 FOOT AT
2 SECONDS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 NM OR LESS.
TUE
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 1 FOOT
AT 9 SECONDS.
TUE NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT, BECOMING
NW 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: W
3 FT AT 5 SECONDS AND N 1 FOOT AT 3 SECONDS.
WED
N WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 3 FT. WAVE DETAIL: SW 2 FT AT 5 SECONDS AND N 1 FOOT AT
3 SECONDS.
WED NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
3 FT AT 7 SECONDS AND SE 1 FOOT AT 2 SECONDS.
THU
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 2 TO
4 FT.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 4 FT. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT.
SEAS 3 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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